Package org.apache.hadoop.hdfs.client

Examples of org.apache.hadoop.hdfs.client.HdfsDataInputStream.releaseBuffer()

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          dfsIn.getReadStatistics().getTotalBytesRead());
      Assert.assertEquals(4096,
          dfsIn.getReadStatistics().getTotalZeroCopyBytesRead());
      Assert.assertArrayEquals(Arrays.copyOfRange(original, 0, 4096),
          byteBufferToArray(result));
      dfsIn.releaseBuffer(result);
     
      // Try to read 4097, but only get 4096 because of the block size.
      result =
          dfsIn.read(null, 4097, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
      Assert.assertEquals(4096, result.remaining());
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      result =
          dfsIn.read(null, 4097, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
      Assert.assertEquals(4096, result.remaining());
      Assert.assertArrayEquals(Arrays.copyOfRange(original, 4096, 8192),
          byteBufferToArray(result));
      dfsIn.releaseBuffer(result);
    } finally {
      if (fsIn != null) fsIn.close();
      if (fs != null) fs.close();
      if (cluster != null) cluster.shutdown();
    }
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          dfsIn.getReadStatistics().getTotalBytesRead());
      Assert.assertEquals(4096,
          dfsIn.getReadStatistics().getTotalZeroCopyBytesRead());
      Assert.assertArrayEquals(Arrays.copyOfRange(original, 0, 4096),
          byteBufferToArray(result));
      dfsIn.releaseBuffer(result);
     
      // Try to read 4097, but only get 4096 because of the block size.
      result =
          dfsIn.read(null, 4097, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
      Assert.assertEquals(4096, result.remaining());
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      result =
          dfsIn.read(null, 4097, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
      Assert.assertEquals(4096, result.remaining());
      Assert.assertArrayEquals(Arrays.copyOfRange(original, 4096, 8192),
          byteBufferToArray(result));
      dfsIn.releaseBuffer(result);
    } finally {
      if (fsIn != null) fsIn.close();
      if (fs != null) fs.close();
      if (cluster != null) cluster.shutdown();
    }
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          dfsIn.getReadStatistics().getTotalBytesRead());
      Assert.assertEquals(4096,
          dfsIn.getReadStatistics().getTotalZeroCopyBytesRead());
      Assert.assertArrayEquals(Arrays.copyOfRange(original, 0, 4096),
          byteBufferToArray(result));
      dfsIn.releaseBuffer(result);
     
      // Try to read 4097, but only get 4096 because of the block size.
      result =
          dfsIn.read(null, 4097, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
      Assert.assertEquals(4096, result.remaining());
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      result =
          dfsIn.read(null, 4097, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
      Assert.assertEquals(4096, result.remaining());
      Assert.assertArrayEquals(Arrays.copyOfRange(original, 4096, 8192),
          byteBufferToArray(result));
      dfsIn.releaseBuffer(result);
    } finally {
      if (fsIn != null) fsIn.close();
      if (fs != null) fs.close();
      if (cluster != null) cluster.shutdown();
    }
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